Definition of "uniformity"

Brown was the first livery selected for the company by Brunel nearly 108 years ago, and it continued until October, 1864, when the Directors decided that, to relieve the uniformity, carriages of all classes should be painted white from the waist upwards.

1943 March and April, “G.W.R. Rolling Stock Colours”, in Railway Magazine, page 106

The uniformity of the wheel diameters of diesel and electric locomotives and m.u. trains impairs the spreading of grease from one point fed by the lubricator and the growing traffic of m.u. trains and railcars has increased the need for lubrication and for check rails in certain places.

1962 December, “Talking of Trains: Rail and flange lubrication”, in Modern Railways, page 372